Merge branch '4.4' into 5.1

* 4.4:
  CS: Apply ternary_to_null_coalescing fixer

Author: derrabus

Adapter/ExtLdap/Collection.php

@@ -101,7 +101,7 @@ public function offsetGet($offset)
     {
         $this->toArray();
 
-        return isset($this->entries[$offset]) ? $this->entries[$offset] : null;
+        return $this->entries[$offset] ?? null;
     }
 
     public function offsetSet($offset, $value)

Entry.php

@@ -59,7 +59,7 @@ public function hasAttribute(string $name)
      */
     public function getAttribute(string $name)
     {
-        return isset($this->attributes[$name]) ? $this->attributes[$name] : null;
+        return $this->attributes[$name] ?? null;
     }
 
     /**